U.S. patent application number 14/028546 was filed with the patent office on 2015-01-08 for portable electronic module and heat dissipating mechanism thereof.
This patent application is currently assigned to Wistron Corporation. The applicant listed for this patent is Wistron Corporation. Invention is credited to Yi-Hsieh Chiou, Kai-Yu Chu, Shao-Huai Tsai, Yu-Han Tsai.
Application Number | 20150011149 14/028546 |
Document ID | / |
Family ID | 52133113 |
Filed Date | 2015-01-08 |
United States Patent
Application |
20150011149 |
Kind Code |
A1 |
Chu; Kai-Yu ; et
al. |
January 8, 2015 |
PORTABLE ELECTRONIC MODULE AND HEAT DISSIPATING MECHANISM
THEREOF
Abstract
A portable electronic module includes a casing having an air
inlet, a heat generating member disposed in the casing, and a heat
dissipating mechanism. The heat dissipating mechanism includes a
fixing frame disposed at the casing corresponding to the air inlet,
a driving handle, a driving device for driving the driving handle
to move reciprocally, and a plurality of fans. The driving handle
is disposed at a side of the fixing frame and has a plurality of
holes arranged alternately. The fans are pivotally connected to the
fixing frame in an alternate arrangement so as to swing relative to
the fixing frame. Each fan has a protruding pillar extending toward
the corresponding hole. Each protruding pillar is movably disposed
through the corresponding hole, so that each fan could swing with
reciprocation of the driving handle to guide airflow to pass
through the air inlet to the heat generating member.
Inventors: |
Chu; Kai-Yu; (New Taipei
City, TW) ; Tsai; Shao-Huai; (New Taipei City,
TW) ; Tsai; Yu-Han; (New Taipei City, TW) ;
Chiou; Yi-Hsieh; (New Taipei City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Wistron Corporation |
New Taipei City |
|
TW |
|
|
Assignee: |
Wistron Corporation
New Taipei City
TW
|
Family ID: |
52133113 |
Appl. No.: |
14/028546 |
Filed: |
September 17, 2013 |
Current U.S.
Class: |
454/184 |
Current CPC
Class: |
G06F 1/203 20130101;
H01L 23/467 20130101; H01L 2924/0002 20130101; H01L 2924/00
20130101; H01L 2924/0002 20130101 |
Class at
Publication: |
454/184 |
International
Class: |
H05K 7/20 20060101
H05K007/20 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 2, 2013 |
TW |
102123661 |
Claims
1. A portable electronic module comprising: a casing having an air
inlet; at least one heat generating member disposed in the casing;
and a heat dissipating mechanism comprising: a fixing frame
disposed at the casing corresponding to the air inlet; a driving
handle disposed at a side of the fixing frame and having a
plurality of holes arranged alternately; a driving device for
driving the driving handle to move reciprocally relative to the
fixing frame; and a plurality of fans pivotally connected to the
fixing frame in an alternate arrangement so as to swing relative to
the fixing frame, each fan having a protruding pillar extending
toward the corresponding hole, each protruding pillar being movably
disposed through the corresponding hole so that each fan could
swing with reciprocation of the driving handle to guide airflow to
pass through the air inlet to the heat generating member.
2. The portable electronic module of claim 1, wherein a rack
structure is formed on the driving handle corresponding to the
driving device, the driving device is a motor and has a gear shaft,
and the gear shaft drives the driving handle to move reciprocally
relative to the fixing frame when the gear shaft is engaged with
the rack structure and rotates clockwise and counterclockwise
alternately.
3. The portable electronic module of claim 2, wherein each fan has
an upper pivot shaft, an upper pivot hole is formed on the fixing
frame corresponding to the upper pivot shaft, and the upper pivot
shaft is rotatably disposed through the upper pivot hole.
4. The portable electronic module of claim 3, wherein each fan has
a first side relatively away from the driving handle and a second
side relatively close to the driving handle, the first side is
opposite to the second side, and a distance between the upper pivot
shaft and the first side is less than or equal to a half of a
distance between the first side and the second side.
5. The portable electronic module of claim 4, wherein each fan has
a lower pivot shaft, a lower pivot hole is formed on the fixing
frame corresponding to the lower pivot shaft, and the lower pivot
shaft is rotatably disposed through the lower pivot hole.
6. The portable electronic module of claim 5, wherein each fan is
an approximately trapezoidal shape, and the first side is an arc
shape.
7. The portable electronic module of claim 5, wherein the casing
has a channel structure extending between the heat dissipating
mechanism and the heat generating member for guiding the airflow
passing through the air inlet to the heat generating member.
8. The portable electronic module of claim 7, wherein the casing
has an air outlet to exhaust the airflow passing through the heat
generating member.
9. The portable electronic module of claim 5, wherein a channel
structure extends from the fixing frame toward the heat generating
member for guiding the airflow passing through the air inlet to the
heat generating member.
10. The portable electronic module of claim 1, wherein the driving
handle is made of magnetic material, and the driving device
comprises: an electromagnet located at a side of the driving handle
for providing magnetic force when being electrically conducted so
as to absorb the driving handle laterally to move toward the
electromagnet; and a spring connected to the driving handle for
providing elastic force to drive the driving handle to move away
from the electromagnet.
11. The portable electronic module of claim 1, wherein the driving
device comprises: a motor having a rotating shaft; a cam disposed
on the rotating shaft to rotate with the rotating shaft; and a
spring connected to the driving handle for providing elastic force
to drive the driving handle to abut against the cam so as to make
the driving handle move reciprocally relative to the fixing frame
with rotation of the rotating shaft.
12. The portable electronic module of claim 1, wherein an
elliptical hole is formed on the driving handle, and the driving
device comprises: a motor having a semi-cylindrical shaft disposed
through the elliptical hole; and a spring connected to the driving
handle, for providing elastic force to drive an inner wall of the
elliptical hole of the driving handle to abut against the
semi-cylindrical shaft so as to make the driving handle move
reciprocally relative to the fixing frame with rotation of the
semi-cylindrical shaft.
13. A heat dissipating mechanism for dissipating heat in a portable
electronic module, the portable electronic module comprising a
casing and at least one heat generating member, the casing having
an air inlet, the heat generating member being disposed in the
casing, the heat dissipating mechanism comprising: a fixing frame
disposed at the casing corresponding to the air inlet; a driving
handle disposed at a side of the fixing frame and having a
plurality of holes arranged alternately; a driving device for
driving the driving handle to move reciprocally relative to the
fixing frame; and a plurality of fans pivotally connected to the
fixing frame in an alternate arrangement so as to swing relative to
the fixing frame, each fan having a protruding pillar extending
toward the corresponding hole, each protruding pillar being movably
disposed through the corresponding hole so that each fan could
swing with reciprocation of the driving handle to guide airflow to
pass through the air inlet to the heat generating member.
14. The heat dissipating mechanism of claim 13, wherein a rack
structure is formed on the driving handle corresponding to the
driving device, the driving device is a motor and has a gear shaft,
and the gear shaft drives the driving handle to move reciprocally
relative to the fixing frame when the gear shaft is engaged with
the rack structure and rotates clockwise and counterclockwise
alternately.
15. The heat dissipating mechanism of claim 14, wherein each fan
has an upper pivot shaft, an upper pivot hole is formed on the
fixing frame corresponding to the upper pivot shaft, and the upper
pivot shaft is rotatably disposed through the upper pivot hole.
16. The heat dissipating mechanism of claim 15, wherein each fan
has a first side relatively away from the driving handle and a
second side relatively close to the driving handle, the first side
is opposite to the second side, and a distance between the upper
pivot shaft and the first side is less than or equal to a half of a
distance between the first side and the second side.
17. The heat dissipating mechanism of claim 16, wherein each fan
has a lower pivot shaft, a lower pivot hole is formed on the fixing
frame corresponding to the lower pivot shaft, and the lower pivot
shaft is rotatably disposed through the lower pivot hole.
18. The heat dissipating mechanism of claim 17, wherein each fan is
an approximately trapezoidal shape, and the first side is an arc
shape.
19. The heat dissipating mechanism of claim 17, wherein a channel
structure extends from the fixing frame toward the heat generating
member for guiding the airflow passing through the air inlet to the
heat generating member.
20. The heat dissipating mechanism of claim 13, wherein the driving
handle is made of magnetic material and the driving device
comprises: an electromagnet located at a side of the driving handle
for providing magnetic force when being electrically conducted so
as to absorb the driving handle laterally to move toward the
electromagnet; and a spring connected to the driving handle for
providing elastic force to drive the driving handle to move away
from the electromagnet.
21. The heat dissipating mechanism of claim 1, wherein the driving
device comprises: a motor having a rotating shaft; a cam disposed
on the rotating shaft to rotate with the rotating shaft; and a
spring connected to the driving handle for providing elastic force
to drive the driving handle to abut against the cam so as to make
the driving handle move reciprocally relative to the fixing frame
with rotation of the rotating shaft.
22. The heat dissipating mechanism of claim 13, wherein an
elliptical hole is formed on the driving handle and the driving
device comprises: a motor having a semi-cylindrical shaft disposed
through the elliptical hole; and a spring connected to the driving
handle, for providing elastic force to drive an inner wall of the
elliptical hole of the driving handle to abut against the
semi-cylindrical shaft so as to make the driving handle move
reciprocally relative to the fixing frame with rotation of the
semi-cylindrical shaft.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a portable electronic
module and a heat dissipating mechanism thereof, and more
specifically, to a portable electronic module utilizing a driving
device to drive a driving handle to move reciprocally for swinging
fans and a heat dissipating mechanism thereof.
[0003] 2. Description of the Prior Art
[0004] With improvement of portable electronic technology, there
are more and more complicated and powerful functions built in a
portable electronic module (e.g. a notebook). In other words, an
operational speed of an inner electronic component (e.g. a center
processing unit, a hard disk drive, or a motherboard) built in the
portable electronic module needs to become faster and faster for
handling a huge amount of system work. However, heat also increases
considerably with high operational speed of the inner electronic
component. Thus, how to dissipate heat generated in the portable
electronic module is a major concern in the design of the portable
electronic module.
[0005] In general, a conventional heat dissipating design is to
utilize assembly of a fan device and a heat dissipating fin
structure, meaning that the fan device could be installed on the
heat dissipating fin structure located above a heat generating
member. In such a manner, when the fan device is working, cold air
could be guided into the portable electronic module through an air
inlet (usually located at a side of a casing of the portable
electronic module) of the portable electronic module, and then hot
air that has passed through the heat generating member and the heat
dissipating fin structure could be exhausted from an air outlet
(usually located at another side of the casing) of the portable
electronic module. Accordingly, the purpose of dissipating heat
generated in the portable electronic module could be achieved by
the aforesaid air convection. However, the aforesaid configuration
not only occupies excessive inner space of the portable electronic
module so as to be disadvantageous to the thinning design of the
portable electronic module, but also limits the structural design
of the portable electronic module and flexibility of the portable
electronic module in use of its inner space.
SUMMARY OF THE INVENTION
[0006] An objective of the present invention is to provide a
portable electronic module utilizing a driving device to drive a
driving handle to move reciprocally for swinging fans and a heat
dissipating mechanism thereof, to solve the aforesaid problem.
[0007] The present invention provides a portable electronic module
including a casing, at least one heat generating member, and a heat
dissipating mechanism. The casing has an air inlet. The heat
generating member is disposed in the casing. The heat dissipating
mechanism includes a fixing frame, a driving handle, a driving
device, and a plurality of fans. The fixing frame is disposed at
the casing corresponding to the air inlet. The driving handle is
disposed at a side of the fixing frame and has a plurality of holes
arranged alternately. The driving device is used for driving the
driving handle to move reciprocally relative to the fixing frame.
The plurality of fans is pivotally connected to the fixing frame in
an alternate arrangement so as to swing relative to the fixing
frame. Each fan has a protruding pillar extending toward the
corresponding hole. Each protruding pillar is movably disposed
through the corresponding hole so that each fan could swing with
reciprocation of the driving handle to guide airflow to pass
through the air inlet to the heat generating member.
[0008] According to the claimed invention, a rack structure is
formed on the driving handle corresponding to the driving device,
the driving device is a motor and has a gear shaft, and the gear
shaft drives the driving handle to move reciprocally relative to
the fixing frame when the gear shaft is engaged with the rack
structure and rotates clockwise and counterclockwise
alternately.
[0009] According to the claimed invention, each fan has an upper
pivot shaft, an upper pivot hole is formed on the fixing frame
corresponding to the upper pivot shaft, and the upper pivot shaft
is rotatably disposed through the upper pivot hole.
[0010] According to the claimed invention, each fan has a first
side relatively away from the driving handle and a second side
relatively close to the driving handle, the first side is opposite
to the second side, and a distance between the upper pivot shaft
and the first side is less than or equal to a half of a distance
between the first side and the second side.
[0011] According to the claimed invention, each fan has a lower
pivot shaft, a lower pivot hole is formed on the fixing frame
corresponding to the lower pivot shaft, and the lower pivot shaft
is rotatably disposed through the lower pivot hole.
[0012] According to the claimed invention, each fan is an
approximately trapezoidal shape, and the first side is an arc
shape.
[0013] According to the claimed invention, the casing has a channel
structure extending between the heat dissipating mechanism and the
heat generating member for guiding the airflow passing through the
air inlet to the heat generating member.
[0014] According to the claimed invention, the casing has an air
outlet to exhaust the airflow passing through the heat generating
member.
[0015] According to the claimed invention, a channel structure
extends from the fixing frame toward the heat generating member for
guiding the airflow passing through the air inlet to the heat
generating member.
[0016] According to the claimed invention, the driving handle is
made of magnetic material, and the driving device includes an
electromagnet and a spring. The electromagnet is located at a side
of the driving handle for providing magnetic force when being
electrically conducted so as to absorb the driving handle laterally
to move toward the electromagnet. The spring is connected to the
driving handle for providing elastic force to drive the driving
handle to move away from the electromagnet.
[0017] According to the claimed invention, the driving device
includes a motor, a cam, and a spring. The motor has a rotating
shaft. The cam is disposed on the rotating shaft to rotate with the
rotating shaft. The spring is connected to the driving handle for
providing elastic force to drive the driving handle to abut against
the cam so as to make the driving handle move reciprocally relative
to the fixing frame with rotation of the rotating shaft.
[0018] According to the claimed invention, an elliptical hole is
formed on the driving handle and the driving device includes a
motor and a spring. The motor has a semi-cylindrical shaft disposed
through the elliptical hole. The spring is connected to the driving
handle, for providing elastic force to drive an inner wall of the
elliptical hole of the driving handle to abut against the
semi-cylindrical shaft so as to make the driving handle move
reciprocally relative to the fixing frame with rotation of the
semi-cylindrical shaft.
[0019] The present invention further provides a heat dissipating
mechanism for dissipating heat in a portable electronic module. The
portable electronic module includes a casing and at least one heat
generating member. The casing has an air inlet. The heat generating
member is disposed in the casing. The heat dissipating mechanism
includes a fixing frame, driving handle, a driving device, and a
plurality of fans. The fixing frame is disposed at the casing
corresponding to the air inlet. The driving handle is disposed at a
side of the fixing frame and has a plurality of holes arranged
alternately. The driving device is used for driving the driving
handle to move reciprocally relative to the fixing frame. The
plurality of fans is pivotally connected to the fixing frame in an
alternate arrangement so as to swing relative to the fixing frame.
Each fan has a protruding pillar extending toward the corresponding
hole. Each protruding pillar is movably disposed through the
corresponding hole so that each fan could swing with reciprocation
of the driving handle to guide airflow to pass through the air
inlet to the heat generating member.
[0020] Compared with the prior art utilizing assembly of the fan
device and the heat dissipating fin structure for heat dissipation,
the present invention adopts the design that the driving device
drives the driving handle to move reciprocally so as to make the
fans swing with reciprocation of the driving handle, to guide the
airflow to enter the casing through the air inlet for dissipating
heat generated by the heat generating member. In such a manner,
since the present invention could only utilize linkage of the
driving handle, the fans and the driving device disposed at the air
inlet of the casing to achieve the heat dissipating purpose without
additional disposal of the fan device and the heat dissipating fin
structure, the present invention could efficiently solve the prior
art problem that assembly of the fan device and the heat
dissipating fin structure occupies excessive inner space of the
portable electronic module, so as to be advantageous to the
thinning design of the portable electronic module and greatly
improve flexibility of the portable electronic module in its
structural design as well as in use of its inner space.
[0021] These and other objectives of the present invention will no
doubt become obvious to those of ordinary skill in the art after
reading the following detailed description of the preferred
embodiment that is illustrated in the various figures and
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] FIG. 1 is a partial inner diagram of a portable electronic
module according to an embodiment of the present invention.
[0023] FIG. 2 is an exploded diagram of a heat dissipating
mechanism in FIG. 1.
[0024] FIG. 3 is a side view of a fan in FIG. 2.
[0025] FIG. 4 is a front view of the heat dissipating mechanism in
FIG. 1.
[0026] FIG. 5 is a top view of the heat dissipating mechanism in
FIG. 4 when the fan swings leftward relative to a fixing frame.
[0027] FIG. 6 is a top view of the heat dissipating mechanism in
FIG. 5 when the fan swings rightward relative to the fixing
frame.
[0028] FIG. 7 is a diagram of a driving device and a driving handle
being disposed in a casing according to another embodiment of the
present invention.
[0029] FIG. 8 is a diagram of an electromagnet in FIG. 7 absorbing
laterally the driving handle.
[0030] FIG. 9 is a diagram of a driving device and a driving handle
being disposed in the casing according to another embodiment of the
present invention.
[0031] FIG. 10 is a diagram of a spring in FIG. 9 driving the
driving handle to move rightward.
[0032] FIG. 11 is a diagram of a driving device and a driving
handle being disposed in the casing according to another embodiment
of the present invention.
[0033] FIG. 12 is a diagram of a semi-cylindrical shaft of a motor
driving the driving handle to move rightward.
DETAILED DESCRIPTION
[0034] Please refer to FIG. 1, which is a partial inner diagram of
a portable electronic module 10 according to an embodiment of the
present invention. In this embodiment, the portable electronic
module 10 could be a notebook, but not limited thereto, meaning
that the portable electronic module 10 could also be other
conventional portable electronic apparatus (e.g. a tablet
computer). As shown in FIG. 1, the portable electronic module 10
includes a casing 12, at least one heat generating member 14 (one
shown in FIG. 1, but not limited thereto), and a heat dissipating
mechanism 16. The heat generating member 14 is disposed in the
casing 12. The heat generating member 14 could be an electronic
component commonly disposed in a portable electronic module and
could generate heat when working, such as a CPU (Center Processing
Unit) chip or a VGA (Video Graphics Array) chip.
[0035] Please refer to FIG. 1 and FIG. 2. FIG. 2 is an exploded
diagram of the heat dissipating mechanism 16 in FIG. 1. As shown in
FIG. 1 and FIG. 2, the heat dissipating mechanism 16 includes a
fixing frame 18, a driving handle 20, a plurality of fans 22, and a
driving device 24. The casing 12 has an air inlet 26 for airflow to
pass. The fixing frame 18 is disposed at the casing 12
corresponding to the air inlet 26. The fixing frame 18 could be
disposed at the casing 12 in a screw locking manner, but not
limited thereto. That is, the fixing frame 18 could also adopt
other fixing design commonly seen in the prior art. For example,
the fixing frame 18 could be fixed on the casing 12 by a structure
engagement design, or be integrally formed on the casing 12. The
driving handle 20 is disposed at a side of the fixing frame 18 and
has a plurality of holes 28 arranged alternately, and a plurality
of fans 22 is pivotally connected to the fixing frame 18 in an
alternate arrangement so as to swing relative to the fixing frame
18. To be more specific, as shown in FIG. 2 and FIG. 3 (i.e. a side
view of the fan 22 in FIG. 2), each fan 22 has a protruding pillar
30 extending toward the corresponding hole 28. Each protruding
pillar 30 is movably disposed through the corresponding hole 28,
meaning that a diameter of the hole 28 could be greater than a
diameter of the protruding pillar 30. In such a manner, the hole 28
could provide sufficient space to make the protruding pillar 30
movable in the hole 28 with reciprocation of the driving handle 20,
so as to prevent the protruding pillar 30 from being jammed.
[0036] Furthermore, as shown in FIG. 2 and FIG. 3, in this
embodiment, each fan 22 has an upper pivot shaft 32, and an upper
pivot hole 34 is formed on the fixing frame 18 corresponding to the
upper pivot shaft 32. The upper pivot shaft 32 is rotatably
disposed through the upper pivot hole 34 so as to make the fan 22
pivotally connected to the fixing frame 18.
[0037] For improving the heat dissipating efficiency of each fan
22, each fan 22 has a first side S.sub.1 relatively away from the
driving handle 20 and a second side S.sub.2 relatively close to the
driving handle 20. In this embodiment, the first side S.sub.1 is
opposite to the second side S.sub.2, and a distance d between the
upper pivot shaft 32 and the first side S.sub.1 is preferably less
than or equal to a half of a distance D between the first side
S.sub.1 and the second side S.sub.2. Each fan 22 could be a
dual-wave fan for generating preferable airflow volume and pressure
when swinging. Furthermore, for making each fan 22 swing more
steadily and quietly, each fan 22 could be an approximately
trapezoidal shape and the first side S.sub.1 could be an arc shape
(as shown in FIG. 3). Each fan 22 could further have a lower pivot
shaft 36, and a lower pivot hole 38 could be formed on the fixing
frame 18 corresponding to the lower pivot shaft 36. The lower pivot
shaft 36 is rotatably disposed through the lower pivot hole 38. In
such a manner, each fan 22 could swing relative to the fixing frame
18 more steadily.
[0038] Furthermore, please refer to FIG. 2 and FIG. 4. FIG. 4 is a
front view of the heat dissipating mechanism 16 in FIG. 1. In this
embodiment, the portable electronic module 10 adopts the gear
transmission design. To be more specific, as shown in FIG. 2 and
FIG. 4, a rack structure 40 is formed on the driving handle 20
corresponding to the driving device 24. The driving device 24 is a
motor and has a gear shaft 42. The gear shaft 42 is engaged with
the rack structure 40. Accordingly, when the gear shaft 42 of the
driving device 24 rotates clockwise and counterclockwise
alternately, the driving device 24 could drive the driving handle
20 to move reciprocally relative to the fixing frame 18 via
engagement of the gear shaft 42 and the rack structure 40. The
driving device 24 could adopt a time division driving method for
controlling the gear shaft 42 of the driving device 24 to rotate
clockwise and counterclockwise alternately, and the related
description is omitted herein since it is commonly seen in the
prior art.
[0039] Furthermore, for improving the heat dissipating efficiency
of the heat dissipating mechanism 16, the casing 12 could further
have a channel structure 44 and an air outlet 46 as shown in FIG.
1. The channel structure 44 could extend between the heat
dissipating mechanism 16 and the heat generating member 14.
Accordingly, the channel structure 44 could guide airflow to pass
through the heat generating member 14 and then be exhausted from
the air outlet 46. To be noted, the design of the channel structure
44 is not limited to the aforesaid embodiment. That is, in another
embodiment, the channel structure 44 could be directly formed on
the fixing frame 18. In other words, the channel structure 44 could
extend from the fixing frame 18 toward the heat generating member
14 for guiding the airflow to pass through the heat generating
member 14.
[0040] More detailed description for the heat dissipating operation
of the heat dissipating mechanism 16 is provided as follows. Please
refer to FIG. 1, FIG. 4, FIG. 5, and FIG. 6. FIG. 5 is a top view
of the heat dissipating mechanism 16 in FIG. 4 when the fan 22
swings leftward relative to the fixing frame 18. FIG. 6 is a top
view of the heat dissipating mechanism 16 in FIG. 5 when the fan 22
swings rightward relative to the fixing frame 18. When the heat
generating member 14 is in a high heat generating state (e.g. a
center processing unit is in a high speed mode), the portable
electronic module 10 could turn on the driving device 24 to make
the gear shaft 42 rotate clockwise and counterclockwise
alternately, so as to drive the driving handle 20 to move
reciprocally relative to the fixing frame 18. Accordingly, each fan
22 could swing in the fixing frame 18 with reciprocation of the
driving handle 20.
[0041] For example, in this embodiment, each fan 22 could swing
leftward from a position as shown in FIG. 4 to a position as shown
in FIG. 5 with counterclockwise rotation of the gear shaft 42.
Subsequently, each fan 22 could swing rightward to a position as
shown in FIG. 6 with clockwise rotation of the gear shaft 42.
Finally, each fan 22 could swing back to the position as shown in
FIG. 4 with counterclockwise rotation of the gear shaft 42, and
then could repeat the aforesaid motion if the gear shaft 42 keeps
rotating clockwise and counterclockwise alternately. In other
words, during the gear shaft 42 keeps rotating clockwise and
counterclockwise alternately, the driving device 24 could drive the
driving handle 20 via engagement of the gear shaft 42 and the rack
structure 40 to move reciprocally, so that each hole 28 could keep
pushing the corresponding protruding pillar 30 leftward and
rightward, meaning that each fan 22 could keep swinging in the
fixing frame 18 with reciprocation of the driving handle 20. In
such a manner, via swinging of the each fan 22 in the fixing frame
18, the heat dissipating mechanism 16 could guide airflow to enter
the casing 12 through the air inlet 26 and to pass through the heat
generating member 14 by guidance of the channel structure 44, and
then could exhaust the airflow from the air outlet 46, so as to
dissipate heat generated by the heat generating member 14.
[0042] On the other hand, if the portable electronic module 10 is
in a turn-off state or a low heat generating state, the driving
device 24 could drive the driving handle 20 to make the plurality
of fans 22 overlap with each other so that the air inlet 26 could
be closed. For example, the gear shaft 42 in FIG. 4 could rotate
clockwise to be engaged with a right end of the rack structure 40,
so as to drive the driving handle 20 to move leftward relative to
the fixing frame 18. Accordingly, each fan 22 could swing rightward
to overlap with the adjacent fan 22, so that the air inlet 26 could
be closed by the fans 22 which overlap with each other for
preventing dust and objects from entering the casing 12.
[0043] It should be mentioned that the driving design of the
driving device is not limited to the aforesaid embodiment. That is,
all driving designs for driving the driving handle to move
reciprocally could be adopted by the present invention. For
example, please refer to FIG. 7 and FIG. 8. FIG. 7 is a diagram of
a driving device 24' and a driving handle 20' being disposed in the
casing 12 according to another embodiment of the present invention.
FIG. 8 is a diagram of an electromagnet 48 in FIG. 7 absorbing
laterally the driving handle 20'. The casing 12 is depicted by
dotted lines in FIG. 7 and FIG. 8. Components both mentioned in
this embodiment and the aforesaid embodiment represent components
with similar functions or structures, and the related description
is omitted herein. In this embodiment, the driving handle 20' could
be made of magnetic material (e.g. metal). As shown in FIG. 7, the
driving device 24' could include the electromagnet 48 and a spring
50. The electromagnet 48 is located at a side of the driving handle
20' for providing magnetic force when being electrically conducted
to laterally absorb the driving handle 20' to move toward the
electromagnet 48. The spring 50 is connected to the driving handle
20' for providing elastic force to drive the driving handle 20' to
move away from the electromagnet 48. Via the aforesaid design, when
the portable electronic module 10 provides electrical power to the
electromagnet 48, the electromagnet 48 could generate magnetic
force to laterally absorb the driving handle 20' from a position as
shown in FIG. 7 to a position as shown in FIG. 8. At this time, the
spring 50 is in a stretched state. On the other hand, if the
portable electronic module 10 stops providing electrical power to
the electromagnet 48 so that the electromagnet 48 could not
generate magnetic force to absorb the driving handle 20', the
elastic force provided by the spring 50 in the stretched state
could drive the driving handle 20' from the position as shown in
FIG. 8 back to the position as shown in FIG. 7. In such a manner,
via the aforesaid design, the driving device 24' could drive the
driving handle 20' to move reciprocally.
[0044] Furthermore, please refer to FIG. 9 and FIG. 10. FIG. 9 is a
diagram of a driving device 24'' and a driving handle 20'' being
disposed in the casing 12 according to another embodiment of the
present invention. FIG. 10 is a diagram of a spring 52 in FIG. 9
driving the driving handle 20'' to move rightward. The casing 12 is
depicted by dotted lines in FIG. 9 and FIG. 10. Components both
mentioned in this embodiment and the aforesaid embodiments
represent components with similar functions or structures, and the
related description is omitted herein. In this embodiment, the
driving device 24'' includes the spring 52, a motor 54, and a cam
56. The spring 52 is connected to the driving handle 20'' for
providing elastic force to drive the driving handle 20'' to abut
against the cam 56. The motor 54 has a rotating shaft 58. The cam
56 is disposed on the rotating shaft 58 for rotating cooperatively
with the rotating shaft 58. Via the aforesaid design, the driving
handle 20'' could move reciprocally with rotation of the rotating
shaft 58 of the motor 54. For example, when the portable electronic
module 10 provides the motor 54 with electrical power to make the
cam 56 rotate with rotation of the rotating shaft 58 from a
position as shown in FIG. 9 clockwise to a position as shown in
FIG. 10, the driving handle 20'' could move rightward from a
position as shown in FIG. 9 to a position as shown in FIG. 10.
Subsequently, when the cam 56 rotates clockwise from the position
as shown in FIG. 10 back to the position as shown in FIG. 9, the
cam 56 could push the driving handle 20'' to overcome the elastic
force of the spring 52 so that the driving handle 20'' could move
leftward from the position as shown in FIG. 10 to the position as
shown in FIG. 9. In such a manner, via the aforesaid design, the
driving device 24'' could drive the driving handle 20'' to move
reciprocally.
[0045] Furthermore, please refer to FIG. 11 and FIG. 12. FIG. 11 is
a diagram of a driving device 24''' and a driving handle 20'''
being disposed in the casing 12 according to another embodiment of
the present invention. FIG. 12 is a diagram of a semi-cylindrical
shaft 62 of a motor 60 driving the driving handle 20''' to move
rightward. The casing 12 is depicted by dotted lines in FIG. 11 and
FIG. 12. Components both mentioned in this embodiment and the
aforesaid embodiments represent components with similar functions
or structures, and the related description is omitted herein. In
this embodiment, an elliptical hole 64 is formed on the driving
handle 20''' corresponding to the motor 60. The driving device
24''' includes the motor 60 and a spring 66. As shown in FIG. 11,
the semi-cylindrical shaft 62 of the motor 60 is disposed through
the elliptical hole 64. The spring 66 is connected to the driving
handle 20''' for providing elastic force to pull an inner wall 68
of the elliptical hole 64 of the driving handle 20''' to abut
against the semi-cylindrical shaft 62 of the motor 60. Via the
aforesaid design, the driving handle 20''' could move reciprocally
with rotation of the semi-cylindrical shaft 62 in the elliptical
hole 64. For example, when the portable electronic module 10
provides the motor 60 with electrical power to make the
semi-cylindrical shaft 62 rotate clockwise from a position as shown
in FIG. 11 to a position as shown in FIG. 12, the driving handle
20''' move rightward from a position as shown in FIG. 11 to a
position as shown in FIG. 12. Subsequently, when the
semi-cylindrical shaft 62 rotate clockwise from the position as
shown in FIG. 12 to the position as shown in FIG. 11, the elastic
force of the spring 66 could pull the driving handle 20''' to move
leftward from the position as shown in FIG. 12 back to the position
as shown in FIG. 11. In such a manner, via the aforesaid design,
the driving device 24''' could drive the driving handle 20''' to
move reciprocally. As for other derivative driving designs, they
could be reasoned according to the aforesaid embodiments and the
related description is omitted herein.
[0046] Compared with the prior art utilizing assembly of the fan
device and the heat dissipating fin structure for heat dissipation,
the present invention adopts the design that the driving device
drives the driving handle to move reciprocally so as to make the
fans swing with reciprocation of the driving handle, to guide the
airflow to enter the casing through the air inlet for dissipating
heat generated by the heat generating member. In such a manner,
since the present invention could only utilize linkage of the
driving handle, the fans and the driving device disposed at the air
inlet of the casing to achieve the heat dissipating purpose without
additional disposal of the fan device and the heat dissipating fin
structure, the present invention could efficiently solve the prior
art problem that assembly of the fan device and the heat
dissipating fin structure occupies excessive inner space of the
portable electronic module, so as to be advantageous to the
thinning design of the portable electronic module and greatly
improve flexibility of the portable electronic module in its
structural design as well as in use of its inner space.
[0047] Those skilled in the art will readily observe that numerous
modifications and alterations of the device and method may be made
while retaining the teachings of the invention. Accordingly, the
above disclosure should be construed as limited only by the metes
and bounds of the appended claims.
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